| 31. | What is unique about copper is its long mean free path ( approximately 100 atomic spacings at room temperature ).
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| 32. | Except for high quality crystals at low temperatures, the phonon mean free path is not reduced significantly at higher temperatures.
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| 33. | Temperature dependence of the mean free path has an exponential form { e } ^ { \ Theta / bT }.
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| 34. | The mean free path can be increased by reducing the number of impurities in a crystal or by lowering its temperature.
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| 35. | The journey of an electron can be expressed in another way, which is by use of the mean free path.
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| 36. | Radiation treatment planning has pencil beam scanning as one of its modalities . mean free path is involved in IMRT planning.
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| 37. | When " L " is larger than the phonon mean free path, Umklapp scattering process limits thermal conductivity.
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| 38. | Because of spectrum hardening, the " mean free path " of the X-ray spectrum changes with distance.
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| 39. | The effect is strongest when the mean free path of the gas molecules is comparable to the dimensions of the gas container.
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| 40. | Fast electrons which move at a large fraction of the speed of light have a mean free path up to 100 times longer.
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